Multiple switch control assembly with multiple pushbutton interlock latch bar and safety switch

Claim 1

An electrical switch means comprising in combination a plurality of selector switches each having operative and inoperative conditions, a safety switch, mechanical actuating means movable to operate said selector switches and operatively connected to said safety switch, and electrical connections interconnecting said safety switch with each said selector switch, said safety switch controlling current supply to said selector switches and having a first position in which current can be supplied to said selector switches and a second position in which current cannot be so supplied, said actuating means having first, second, third, and fourth positions and being movable consecutively from said first position in which each of said selector switches is in one of its conditions and said safety switch is in its said first position, to said second position in which each of said selector switches is, and has remained, in said one condition and said safety switch is in its said second position, to said third position in which at least one said selector switch is in its said other condition and said safety switch is, and has remained, in its said second position, and into said fourth position in which the said at least one selector switch is, and has remained, in its said other condition and said safety switch is in its said first position, said safety switch having a current switching capacity higher than that of each said selector switch and sufficient to meet predetermined switching load requirements.